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1. 1. Topic: DIMENSION<br />Experiment:07<br />Objectives:<br /><ul><li>Draw the object given.
2. 2. To set the dimension style refer to icon format.
3. 3. To set a suitable scale for geometry, format and annotation from dimension style.</li></ul>Theory:<br />Dimensioning is the process of adding measurement to a drawing. Dimensions show the geometric measurements of objects, the distance or angle between objects or the X and Y coordinate of a feature. There are basic types of dimensioning: linear, radial, and angular. Linear includes horizontal, vertical, aligned, rotated, ardinate, baseline, and continue dimensioning. Every dimension has a dimension style where it control colour, text style and line types scale. Thickness information is not supported by the dimension style.<br /><ul><li>Part of A Dimension
4. 4. Dimension line:A line that indicates the direction and extent of a dimension. For angular information line is an arc.
5. 5. Extension lines: The lines extend from the feature being dimensioned to the dimension line.
6. 6. Arrowheads: Termination point at 2 end of the dimension line.
7. 7. Dimension text: text string that indicates the actual measurement.
8. 8. Leader: A line leading from some annotation to a referenced feature.
9. 9. Centre mark: A small cross that marks the centre of a circle or arc.
10. 10. Centre lines: Broken line that mark the centre of a circle or arc
11. 11. Dimensioning System Variable and Style
12. 12. Dimensioning system variables are used to control the appearance of dimensions. The variable can be set on the command line or through the Dimension Style (DDIM) dialogue boxes.
13. 13. A dimension style can be used to manage all the dimensioning system variable easily and quickly. It consist of a named group of dimension setting that determines that appearances of the dimension. By creating styles the user can quickly and easily set all relevant dimensioning system variable and control the layout and appearances of any dimension. To select a dimension style the user needs to open the Dimension Style dialog boxes by clicking Dimension Style from the dimension toolbar or data from the pull down menu, then choose a style from the current list and then click OK. The setting for the style chosen will be applied on the subsequent dimensions.
14. 14. Dimension Style Dialog Box Components</li></ul>1.3.1Dimension Style <br /><ul><li>Current-display and set the current dimension style. can select a name from the list to make it current.
15. 15. Name-creates or rename a new dimension style family.
16. 16. Save-saved a dimension style.
17. 17. Rename- rename a dimension style.
18. 18. Family
19. 19. Determine which dimension style family member is currently displayed in the dialog box. To specify the setting for a dimension style family, select the family member option the dimension on such as Parent, Linear or Radial, make changes to the dimension style and the choose save.
20. 20. Geometry-
21. 21. Display the geometry dialog box. It control the appearances of the geometry and overall scale of the dimension.
22. 22. Format
23. 23. Display the format dialog box. It control the location of dimension text.
24. 24. Annotation</li></ul>Display the annotation dialog box. It control the appearances of dimension text.<br /><ul><li>Creating Dimension
25. 25. There are 2 method of creating dimension. The first method is by selecting an object to dimension and specifying the dimension line location. The second method is by specifying the extension line origins.
26. 26. 1.4.1Linear Dimension
27. 27. Linear consist of horizontal, vertical, aligned, ordinate, baseline, and continues dimension.
28. 28. Horizontal-choose linear dimension from the dimensioning toolbar.
29. 29. Vertical-choose linear dimension from the dimensioning toolbar.
30. 30. Aligned-choose aligned dimension from the dimensioning toolbar
31. 31. Ordinate-choose ordinate dimension from the dimensioning toolbar
32. 32. Baseline-choose baseline dimension from the dimensioning toolbar
33. 33. Continue-choose continues dimension from the dimensioning toolbar
35. 35. it measure the radius and diameter of arc and circle with optional centre lines or centre mark. Choose diameter dimension from radial dimension flyout on the dimensioning toolbar.
36. 36. angular dimension
37. 37. it measure the angle between 2 line or 3 point.</li></ul>Procedures:<br />Exercise 1<br /><ul><li>The frame was drawing with scale 100x100
38. 38. The object was drawing refer to the scale given.
39. 39. The uses suitable command:
40. 40. Layer
41. 41. Offset
42. 42. Trim
43. 43. Dimension
44. 44. Circle
45. 45. Fillet
46. 46. The suitable object snap is always uses.
47. 47. The from VIEW>TOOLBARS, select the dimension option.